Transmission mounting



Feb. 13, 1945. s. M. FRIEDMAN TRANSMISS ION MOUNTING Filed NOV. 12, 1943 0 W 4 $3 2 Y I Z MAN l W Z n 1, 7 9 NW 4% 9 3 n 8 a k 3 a w I If 1 .I lllll IL nu r1 9 7 g g 1 2 2 2 0J3 3 H z H 2 w 4 ,V a

SAMUEL M FRIEDMAN ATI'ORNEY Patented Feb. 13, 1945 TRANSMISSION MOUNTING 1 Samuel M.FriedmanaBrooklyngN.

Application November 12, 1943, Serlal No. 510,001

7 Claims. (01. 192-115) This inventionrelates to transmission mountadapted for Ll ein motor-transmission assemblies.

In many power driven units, such. as in motor operated sewing machines, transmission -mechanisms are employed in cooperative association with-conventional motors, the arrangement gen erally beingsuch as to permit intermittent transmission of power from the motor through the transmission mechanism to the device to be ings, and particularly to adjustable mountings driven thereby. In most devices of this nature, I

the motor is suitably supported on a. bracket which is either disposed upon or suspended from.

a floor or platform; and the transmission meched to efiiciently carry the load without impairing the axialalignment of the shafts. 0

Other objects, .features and. advantages will appear from (th drawing hereinafter given. .1

. Referring to the drawing:,

. Figurel is an end elevation showing a motor transmission assembly embodying my invention.

Figure 2 is a front view of the assembly of Fig ureLrY Figure '3 is an enlarged fragmentary elevation of one of the adjustable supporting arms employed in the mounting. of my invention, the dot-.

dash lines indicating an adjusted positio of the anism is generally, supported by amounting similarly disposed upon or suspended .from thesame floor or platform. Among the numerous known transmission mechanisms is the type having a clutch arrangement of two complementaryimemhers one carrying a drive plate with a friction? surface thereon, and the other carrying a pulley member operativelyconnectedto the driven .dev vice. Toefiect a proper coactive relationshipbeit tween. the motor and the two complementary portions of the clutch,.it is obviously necessary that theclutch and motor shaft be in substantial axial alignment. This howeveris at times diincult to accomplish, inasmuch as the motors and the transmissions are generally not made by the same manufacturer-and yet they must be properly assembled. And it is also often necessary to employ a selected transmission mechanism with one or more of a .varietyo-fsizes of motors. of more or less complicated adjustable mountings To meet these conditions, various types.

arm with respect to a differently proportioned motor, and

Figure 4 is a fragmentary section of Figure 3 substantially along lineA-d. i

In the drawing, theelectric motor I0 is suspendedfromthe bracket llthrough the medium of hubclamps l2, the bracket being adapted for attachment toa suitable base or platformindicated by dot-dash line I3. The motor shaft l4 has fixedly attached thereto, through the medium of set screw 15, the driving plate l6 containing thereonthe friction facing I1. The pulley mem- -ber I8 contains the disc portion lS in adjacent have beenemployed. It is primarily within the contemplation of my invention toprovide a relatively simple and easily adjusted mounting for motor transmission assemblies whereby a proper operative'relationshipcan be quickly established between the complementary .clutch elements of the transmission and various sized motors. It is within the further contemplation ofthis invention to enable a transmissionmountingof the category above referredm to. be convenient- 1y suspended from or anchoredto the housing of the motor, thereby permitting the transmission it assembly to be conveniently :and accurately adapted for coactive relationshipwith the motor. And in thisaspect of my invention, it isa further;

object to employ thebolts or studs, usedon cone ventional motorsfor securing together the hous- I 'ingsections thereon, as anchoring meansupon which the transmission mounting can be secured.

It is another object of this invention to provide a transmission mounting of the above-mentioned type that can be readily adjusted for operative use with motorsof different"dimensions, and

. which is provided with structural members adaptclutch, plate. [6, in view of the cooperative relation to the clutch facing l1, and normally spaced therefrom. The pulley member together ith discll 9 are rotatably mounted upon the slide shaft 20 which, in the form illustrated, is subtantially similar to the construction shown in Patent #2,187,968. This shaft, containing aqportion of square cross section, is slideably mounted within bearing portion 2| of themounting constituting apart ofmy invention. The right hand terminalportion of said shaftZB (Figure 2) isin abutment with disc ,22, and the terminal portion 23 of the lever 24;to belatendesjcribed, is in abutting engagement with. said-disc 22. I A threaded stud 25 extends into and is attached to the adjacent extremity ofsaid i shaft 20, substantially in themanner .described in said Patent #1181968; andinasmuch as the particular constructionthereof is not a necessary part of 1 thisinvention, it is not describedin detail herein. The nuts 26,are mounted over the. saidstud 25 andhold the said terminal portion of the lever against the disc 22. l I .Surmounted over.;the.boss.21 of bearing portionnzl is the helical spring 28 bearing against disc 22 and normally urging the terminal portion 23 of the leveroutwardly. In this manner,

thesaid. spring. 28 serves to holdfthe clutch disc is normally disengaged from the facing H of of nuts 26,'stud 25 and shaft 20.

.Thelsaidj lever zl is pivotally mounted at29 on the support 30 fixedly associated with the bearing portion 21 of the mounting. The arm 0 T f OFFICE and f the description e en studs 45.

curing members 45 are accordingly given anadmission mounting.

3| of the lever carries at one terminal thereof the brake 32 normally engageable with the periphery of disc IS; the other arm 33 of the such as a sewing machine, through the medium of suitable belting on the pulley.

The said bearing portion 2| isa constituent part of a spider member 34 containing a plurality of radial arms 35 each provided at the terminal thereof with a socket 36 consisting of a concave semi-cylindrical portion extending transversely'of the arm. In rotatable and slidable engagement with each of said sockets is a semi 'cylindrical terminal portion 31 constituting the male member of the adjustable joint of which the socket 36 is the female portion. Each of said male members 31 constitutes the outer ter minal portion of a supporting arm 38 which extends in the general direction of the motor shaft. In the preferred arrangement, the opposite terminals of each of said arms 38 are bent substantially at right angles to the longitudinal extent of the arm, both of said terminal portions containing apertures therein also extending substantially in the direction of the motor shaft. At the outerorclutch terminal 39'of the arm 38, the aperture 46 is adapted to accommodate the shank of the bolt 4|; and in substantial registry with said aperture, but preferably of slightly greater proportions, is the aperture 42 of socket 36 or the female portion of the joint. The said aperture 42 is preferably in the form of an elongated slot extending in the general direction of theaxis of the cylindrical portion of socket 36.

The motorterminal 43 of arm 38 contains an aperture 44, preferably slightly greater than the shank of the stud 45 of the motor Ill. The proportions of the apertures and 44 are prede tion is adapted to be supported from the studs or bolts 45 on the motor l0. Most. conventional motors contain multi-sectioned housings, thev various sections being held together by bolts or According to my invention, these seditional functionto support the entire trans- Inasmuch as the clutch mechanism supported by this mounting must be in substantial axial alignment with. the motor, it is obvious that if the motor housing constitutes the supporting means for the mounting, "a cooperative relationship between the motor and the v to be readily made.

clutch can be eifected more readily than if the mounting were supported by an independent structure. It is also apparent that the arrangement of my invention eliminates the necessity of providing-a special support for the mounting, and obviates the mutilation of any existing structures to enable them to serve as means to support the mounting and associated parts. Furthermore, the entire mounting and motor constitutes a unitary structure, so that when the motor with its bracket is detached from its supporting structure, such as the platform or base I3, the entire motortransmission assembly is at the same time com-' pletely detached and free to be moved as a unit.

In attaching the mounting to a selected motor ID, the nuts 46 on bolts 4| are loosened, so as to permit a relative movement between the male and female portions of the adjustable junctures of the radial arms 35 and terminal portions 39 of supporting arms-38. The nuts 4'! are removed from studs 45, and the terminal portions 43 ofsupporting arms 38 are mounted over said studs 45. The nuts 41 are then replaced and tightened against terminals 43. At the same time the supporting arms 38 are manipulated so as to properly position the male portion 31 within the 1 socket 36. If necessary, the bolts 4| and nuts 46 are first removed to enable such adjustment After the adjustment is' made, and each of: the bolts 4| is properly in place, the nuts 46 are tightened. In this position, the pulley member l8 and associated parts arefirmly supported by the mounting of my invention, which in turn is supported by the motor ill. The adjustment has enabled the parts to beplaced in their proper respective relative positions, so that the shafts 20 and M are in substantial axial alignment, or in such relationship as to permit the complementary clutch elements [6 and I9 to be in coactive relation.

It will be observed that the adjustment that could be effected at the outer or clutch end of each of the supporting arms 38 is practically universal in nature, so that there could be a pivotal movement of the arm 38 radially with respect to the motor, or a lateral movement thereof transversely with respect to the radial arm 35, This will enable the same mounting to be adjusted to motors of different sizes and proportions, inasmuch as the arms 38 could be adjustably moved for cooperative engagement with differently positioned studs 45. It will be also noted that the arrangement, in the preferred form illustrated, of two supporting arms 38 above the motor shaft, and two therebelow, provides for a firm and stablestructural arrangement;

It is of course understood that the embodiment above described and'shown in the drawing is merely illustrative of my invention, and that 1. In a motor-transmission assembly, an elec-: tric motor containing a multi-sectioned housing,

and a plurality of stud members holding said housing together, said stud members extending substantially parallel to the shaft thereof,- a clutch assembly containing a driving plate and a-- pulley member operatively engageable therewith, a mounting comprising a bearing portion, a plurality of supportin arms extending in the gen-- eral direction of the motor shaft and attached to the said stud members and adjustable connecting a slide shaftand a pulley member rotatably means between the bearing portion and said arms; and actuating means for bringing the plate and pulley member into engagement, said clutch assembly and actuating means being cooperably supported by the motor and the said bearing portion of the mounting.

2. In a motor-transmissionassembly, an electric motor containing a multi-sectioned housing and a plurality of stud members holding said housing together, aclutch assembly containing a driving plate and a pulley member operatively I engageable therewith, a mounting comprising a spider and a plurality of supporting arms connecting the said spider to said stud members, said members thereon, a clutch assembly containing 3 a driving plate afiixed to the shaft a slide shaft and a pulley member rotatably of the motor,

mounted on the slide shaft; actuatingmeans engageable with the slide shaft for bringing the pulley member into operative engagementwith the plate, and a mounting operatively supporting said slide shaftand pulley member, said mounting comprising a spider and a plurality of supporting arms connecting the spider to the stud members on the said motor, the spider containing a bearing portion slidably supporting the slide shaft and a plurality of radial arms extending outwardly from saidbearing portion, the said supporting arms being pivotally attached to the said radial arms at the outer extremities thereof, and releasablefastening means to hold said support ing arms in fixed relation to said radial arms.

4. In combination with an electric motor having a housing and a plurality of studsecuring vided with complementary portions of universal mounted on the slide shaft, actuating means engageable with the slide shaft for bringing the pulley member into operative engagement with the plate, and a mounting operatively supporting said slide shaft and pulley member, said mounting comprising a spider and a plurality of supporting armsconnecting the spider to the stud members on the said motor, the spider containing a bearing portion slidably supporting the slide shaft and a plurality of radial arms extending outwardly from said bearing portion, the said supporting arms having their inner ends in detachable engagement with the stud members on the motor, the outer adjacent ends of said supporting and radial arms being adjustably joined together, the said adjacent outer ends being projoints to permit pivotal and lateral adjusting members thereon, a clutch assembly containing a driving plate afiixed to the'shaft of the motor,

a slide shaft anda pulley member rotatably gageable with the slide shaftfor bringin the movement of said supportingarms, and releasable fastening means to hold. said supporting and radial arms in fixed relation to each other.

6. In combination with an electric motor having a housing and a plurality of studsecuring members thereon, a clutch assembly containing a drivingplate affixed to the shaft of the motor, a slide shaft and a pulley member rotatably mounted on the slide shaft; actuating means engageable with the slide shaft for bringing the pulley member into operative engagement with the plate, and a mounting operatively supporting said slide shaft and pulley member, said mounting comprising a spider and. a plurality. of supporting arms connecting the spider to the stud members on the said motor, the spider containing a bearing portion slidably supporting the slide shaft and a plurality of radial arms extending outwardly from said bearing portion, the outer terminals of said radial arms containing female semicylindrical socket members, thesaid supporting arms havingtheir inner ends in detached engagement with the stud members on the motor and havingtheir outer ends providedwith male members in rotatable and slidable engagement with the adjacent said socket members, and rel leasable fastening means to hold said supporting and radial arms in fixed relation to each other.

7. In combination with an electric motor having a housing and a plurality of stud securing .50 mounted on the slide shaft; actuating means enpulley member into operative'engagemcnt with the plate, and a mounting operativelysupporting said slide shaft and pulley member, saidmount ing comprising a spider and a pluralityof sup-p porting arms connecting the spider to the stud members on the said motor, the spider containing a bearing portion slidably supporting the slide shaft and a plurality of radial arms extending outwardly from said bearing portion, the said supporting arms having their inner ends in detachable engagement with the stud members on the motor, the outer ends of the supporting arms being pivotally and slidably joined to the outer extremities of the said radial arms, and releas able fastening means to hold said supporting arms in fixed relation to said radial arms.

5. In combination with an electric motor hav ing a housing and a plurality of stud securing members thereon, a clutch assembly containin a driving plate affixed to the shaft of the motor,

members thereon, a clutch assembly containing a driving plate afllxed to'the shaft of the motor,

a slide shaft and a pulley member rotatablymounted on the slide shaft; actuating means engageable with the slide shaft for bringing the pulley member into operative engagement with I the plate, and a mounting operatively supporting said slide shaft and pulley member, said mounting comprising a spider and a plurality of supporting arms connecting the spider to the stud members on the said motor, the spider containing a bearing portion slidably supporting the slide shaft and a plurality of radial arms extending outwardly from said bearing portion, the said supporting armsbeing pivotally attached to the said radial arms at the outer extremities thereof,

said supporting arms having recessed portions in the region of the pulleymember to provide an unobstructed path for a pulley belt, and releasable fastening means to hold said supporting arms in fixed relation t6 saidradial arms.

SAMUEL M. FRIEDMAN. 

